RE: pg12 - partition by column that might have null values

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Mariel Cherkassky <mariel.cherkassky@xxxxxxxxx>
Sent: Wednesday, October 02, 2019 12:37 AM
Whenever I have a new revision of that object, I update the end_time of the latest revision to be now() and I add a new record of that object with end_date null.

The null value is used to find most recent revisions of objects..

Thanks for the suggestion of infinity ! I'll try it.

 

My partitioning table design model always uses a partitioning column that is 100% static since that guarantees that rows are not constantly moving between partitions (with index update overhead etc).  In this scenario I’d use a “StartTime” column to anchor the row in a partition.  The relatively few rows with a null EndTime don’t need the power of partitioning, just an index to find them.

 

Mike Sofen


[Postgresql General]     [Postgresql PHP]     [PHP Users]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Yosemite]

  Powered by Linux